#27477C
Closest named color: Twilight Blue (#0A437A). oklch(40.2% 0.097 259.9), rgb(39, 71, 124).
Aa
White text reads best on this color (9.21:1).
About this color
#27477C is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.097 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.027 away. White text reads best on it, at 9.21:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.27:1 |
| White text | 9.21:1 |
Values
| HEX | #27477C |
| RGB | rgb(39, 71, 124) |
| HSL | hsl(217, 52%, 32%) |
| OKLCH | oklch(40.2% 0.097 259.9) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #27477C | 9.21:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #27477C | 2.27:1 | Fails | Lc 12.9 | Not readable |
| #27477C text on white | 9.21:1 | AAA | Lc 91.0 | Preferred for body text |
| #27477C text on black | 2.27:1 | Fails | Lc -11.3 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CADAF5
oklch(88.5% 0.041 260.9)
-
Step 300
300
#A5C2F0
oklch(80.9% 0.073 259.5)
-
Step 400
400
#75A1E9
oklch(70.7% 0.117 259.9)
-
Step 500
500
#5188E2
oklch(63.2% 0.148 259.8)
-
Step 600
600
#356FD0
oklch(55.5% 0.162 260.1)
-
Step 700
700
#275DB4
oklch(49.1% 0.15 259.6)
-
Step 800
800
#224C92
oklch(42.7% 0.125 260)
-
Step 900
900 (this color)
#27477C
oklch(40.2% 0.097 259.9)
-
Step 950
950
#142644
oklch(27% 0.061 260.1)
#27477C with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #2F4C7E | 0.019 |
| Deuteranopia (no green cones) | #22447B | 0.011 |
| Tritanopia (no blue cones) | #00535B | 0.080 |
| Achromatopsia (no color) | #484848 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #27477C
#27477C
oklch(40.2% 0.097 259.9)
- #5F4200
#5F4200
oklch(40.1% 0.083 80.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #27477C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.027
- Light Navy #155084 ΔE 0.028
- Cobalt #1E488F ΔE 0.032
- Deep Sea Blue #015482 ΔE 0.040
- Dusk Blue #26538D ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.058
- Light Navy Blue #2E5A88 ΔE 0.059
Use #27477C in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.